Detecting communication Profibus DP errors in S7-300

[EirikV 1]

Hi, Is there something as simple as a status register where I can detect a communication error? In this case: Missing Profibus DP node.

[Mike Dyble 0]

From memory either OB85 or OB86 will be called in response to the node loss, and you can then extract the relavent info. No its not simple, but it can be done. Have a look at OB85 and OB86 in the online help

[EirikV 1]

Thanks, I'll try that!